Shelly 3EM 3-phases Energy sensor

Hi, has anyone here already installed ESPhome on the 3EM? If so, does it have any advantages? Such as balancing meter across all phases?

I don’t see any option for this in Shelly, but I guess you create a template sensor in HA and just add on the starting meter value to the readings.

I have been using shelly 3EM for years, but only today I realized that among the various entities, hidden by the integration there is this: sensor.shelly_3em_channel_a_energy_cost
Do you have any idea what it is?
It gives me a value that perhaps it means as the cost of energy, but I don’t understand what this continuous change depends on, it continues to increase and then reset, but I don’t understand with what logic.